cy_pci.c

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    1 /*
    2  * Copyright (c) 1996, David Greenman
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice unmodified, this list of conditions, and the following
   10  *    disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * $FreeBSD: releng/5.0/sys/pci/cy_pci.c 92739 2002-03-20 02:08:01Z alfred $
   28  */
   29 
   30 /*
   31  * Cyclades Y PCI serial interface driver
   32  */
   33 
   34 #include "opt_cy_pci_fastintr.h"
   35 
   36 #include <sys/param.h>
   37 #include <sys/systm.h>
   38 #include <sys/kernel.h>
   39 #include <sys/bus.h>
   40 
   41 #include <machine/bus.h>
   42 #include <sys/rman.h>
   43 #include <machine/resource.h>
   44 
   45 #include <vm/vm.h>
   46 #include <vm/pmap.h>
   47 
   48 #include <dev/pci/pcivar.h>
   49 
   50 #define CY_PCI_BASE_ADDR0               0x10
   51 #define CY_PCI_BASE_ADDR1               0x14
   52 #define CY_PCI_BASE_ADDR2               0x18
   53 
   54 #define CY_PLX_9050_ICS                 0x4c
   55 #define CY_PLX_9060_ICS                 0x68
   56 #define CY_PLX_9050_ICS_IENABLE         0x040
   57 #define CY_PLX_9050_ICS_LOCAL_IENABLE   0x001
   58 #define CY_PLX_9050_ICS_LOCAL_IPOLARITY 0x002
   59 #define CY_PLX_9060_ICS_IENABLE         0x100
   60 #define CY_PLX_9060_ICS_LOCAL_IENABLE   0x800
   61 
   62 /* Cyclom-Y Custom Register for PLX ID. */
   63 #define PLX_VER                         0x3400
   64 #define PLX_9050                        0x0b
   65 #define PLX_9060                        0x0c
   66 #define PLX_9080                        0x0d
   67 
   68 extern int cyattach_common(void *, int); /* Not exactly correct */
   69 extern void cyintr(int);
   70 
   71 static int      cy_pci_attach(device_t dev);
   72 static int      cy_pci_probe(device_t dev);
   73 
   74 static device_method_t cy_pci_methods[] = {
   75         /* Device interface. */
   76         DEVMETHOD(device_probe,         cy_pci_probe),
   77         DEVMETHOD(device_attach,        cy_pci_attach),
   78 
   79         { 0, 0 }
   80 };
   81 
   82 static driver_t cy_pci_driver = {
   83         "cy",
   84         cy_pci_methods,
   85         0,
   86 };
   87 
   88 static devclass_t       cy_devclass;
   89 
   90 DRIVER_MODULE(cy, pci, cy_pci_driver, cy_devclass, 0, 0);
   91 
   92 static int
   93 cy_pci_probe(dev)
   94         device_t dev;
   95 {
   96         u_int32_t device_id;
   97 
   98         device_id = pci_get_devid(dev);
   99         device_id &= ~0x00060000;
  100         if (device_id != 0x0100120e && device_id != 0x0101120e)
  101                 return (ENXIO);
  102         device_set_desc(dev, "Cyclades Cyclom-Y Serial Adapter");
  103         return (0);
  104 }
  105 
  106 static int
  107 cy_pci_attach(dev)
  108         device_t dev;
  109 {
  110         struct resource *ioport_res, *irq_res, *mem_res;
  111         void *irq_cookie, *vaddr;
  112         u_int32_t ioport;
  113         int adapter, irq_setup, ioport_rid, irq_rid, mem_rid;
  114         u_char plx_ver;
  115 
  116         ioport_res = NULL;
  117         irq_res = NULL;
  118         mem_res = NULL;
  119 
  120         ioport_rid = CY_PCI_BASE_ADDR1;
  121         ioport_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &ioport_rid,
  122             0ul, ~0ul, 0ul, RF_ACTIVE);
  123         if (ioport_res == NULL) {
  124                 device_printf(dev, "ioport resource allocation failed\n");
  125                 goto fail;
  126         }
  127         ioport = rman_get_start(ioport_res);
  128 
  129         mem_rid = CY_PCI_BASE_ADDR2;
  130         mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid,
  131              0ul, ~0ul, 0ul, RF_ACTIVE);
  132         if (mem_res == NULL) {
  133                 device_printf(dev, "memory resource allocation failed\n");
  134                 goto fail;
  135         }
  136         vaddr = rman_get_virtual(mem_res);
  137 
  138         adapter = cyattach_common(vaddr, 1);
  139         if (adapter < 0) {
  140                 device_printf(dev, "no ports found!\n");
  141                 goto fail;
  142         }
  143 
  144         /*
  145          * Allocate our interrupt.
  146          * XXX  Using the ISA interrupt handler directly is a bit of a violation
  147          *      since it doesn't actually take the same argument. For PCI, the
  148          *      argument is a void * token, but for ISA it is a unit. Since
  149          *      there is no overlap in PCI/ISA unit numbers for this driver, and
  150          *      since the ISA driver must handle the interrupt anyway, we use
  151          *      the unit number as the token even for PCI.
  152          */
  153         irq_rid = 0;
  154         irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul,
  155             RF_SHAREABLE | RF_ACTIVE);
  156         if (irq_res == NULL) {
  157                 device_printf(dev, "interrupt resource allocation failed\n");
  158                 goto fail;
  159         }
  160 #ifdef CY_PCI_FASTINTR
  161         irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY | INTR_FAST,
  162             (driver_intr_t *)cyintr, (void *)adapter, &irq_cookie);
  163 #else
  164         irq_setup = ENXIO;
  165 #endif
  166         if (irq_setup != 0)
  167                 irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY,
  168                     (driver_intr_t *)cyintr, (void *)adapter, &irq_cookie);
  169         if (irq_setup != 0) {
  170                 device_printf(dev, "interrupt setup failed\n");
  171                 goto fail;
  172         }
  173 
  174         /*
  175          * Enable the "local" interrupt input to generate a
  176          * PCI interrupt.
  177          */
  178         plx_ver = *((u_char *)vaddr + PLX_VER) & 0x0f;
  179         switch (plx_ver) {
  180         case PLX_9050:
  181                 outw(ioport + CY_PLX_9050_ICS,
  182                     CY_PLX_9050_ICS_IENABLE | CY_PLX_9050_ICS_LOCAL_IENABLE |
  183                     CY_PLX_9050_ICS_LOCAL_IPOLARITY);
  184                 break;
  185         case PLX_9060:
  186         case PLX_9080:
  187         default:                /* Old board, use PLX_9060 values. */
  188                 outw(ioport + CY_PLX_9060_ICS,
  189                     inw(ioport + CY_PLX_9060_ICS) | CY_PLX_9060_ICS_IENABLE |
  190                     CY_PLX_9060_ICS_LOCAL_IENABLE);
  191                 break;
  192         }
  193 
  194         return (0);
  195 
  196 fail:
  197         if (ioport_res != NULL)
  198                 bus_release_resource(dev, SYS_RES_IOPORT, ioport_rid,
  199                     ioport_res);
  200         if (irq_res != NULL)
  201                 bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
  202         if (mem_res != NULL)
  203                 bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
  204         return (ENXIO);
  205 }

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FreeBSD/Linux Kernel Cross Reference sys/pci/cy_pci.c

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sys/pci/cy_pci.c